UPDATE: Sigma now announces compatability problems with Nikon Df as well as D5300

Sigma will release firmware to correct AF and problems with its Nikon-fit lenses on the Nikon Df

UPDATE 04/12/13:

Sigma has now announced that users of the new Nikon Df may also experience AF and OS malfunctions with Nikon-fit Sigma lenses.

The lensmaking firm has said that it will release a firmware update to correct the problem as before, and will also be ensuring that all lenses that leave its factory have the latest firmware installed to be compatible with Nikon cameras.

Lenses made by Sigma will now carry stickers that look like this:

The firmware update will be free and should be available imminently. See Sigma’s website for more information.

UPDATE 22/11/13:

Sigma has released firmware to fix the problems with the following lenses:

The update should make these lenses fully functional with the Nikon D5300. See here for more information and the download link.

ORIGINAL STORY 19/11/13:

In a statement on its website, Sigma has said that the current firmware of its Nikon-fit interchangeable lenses ‘may not work properly with the Nikon D5300‘s OS and Live View Auto Focus functions’.

Though it hasn’t released specific details, Sigma has said that the problem occurs specifically with Nikon-fit interchangable lenses that incorporate an internal motor.

Sigma will be releasing a free firmware update tomorrow (November 20) that it says should correct the problem. You can contact your nearest Sigma dealer in order to receive the update; Sigma provides a full list here.